Wesley, Mil-Std. 2000 (A) only specifies the minimum .008" solder connection height if the component has bottom only terminations. Most LCC's have bottom and side castelation/termination which eliminates the requirement for the .008 spacing. See 4.23.5 of Mil-STD 2000A for clarification. I see no reference to specific spacing requirements in the actual Mil-Std 2000 (16, January 1989). Mark Spitnale Hughes Defense (219) 429-5992 At 07:06 AM 2/7/97 -0500, you wrote: >>Return-Path: <[log in to unmask]> >>Resent-Date: Wed, 5 Feb 1997 15:41:45 -0800 >>Resent-Sender: [log in to unmask] >>Old-Return-Path: <SAMPLES@[138.32.59.15]> >>Comments: Authenticated sender is <SAMPLES@[138.32.59.15]> >>From: [log in to unmask] >>To: [log in to unmask] >>Date: Wed, 5 Feb 1997 10:20:51 +0000 >>Subject: Assy:LCC height control >>Priority: normal >>Resent-Message-Id: <"-c4eJ2.0.zo7.FUD-o"@ipc> >>Resent-From: [log in to unmask] >>X-Mailing-List: <[log in to unmask]> archive/latest/9978 >>X-Loop: [log in to unmask] >>Resent-Sender: [log in to unmask] >> >>Hello >> >>Does anyone have experience trying to control the height of an LCC >>(leadless) off the board. I have drawing requirements of .008". >>The components are ceramic and are on both sides of the board. >>The board is mixed technology and extremely dense. It also has a >>.062" heatsink (plate) on the top side. Top side printing is out of >>the question. >> >>The volumes are low (about 80) >>LCC component count is about 30 per board >>The design is fixed (no chance in He** of changing >>Spec 's are Military ie..2000 >> >>I have tried to locate water/solvent soluable waffers with no luck (.008") >>Hand soldering with a spacer is not my preffered option either >> >>Any recomendations would be appriciated >> >>Thanks in advance >> >>Wesley Samples >>[log in to unmask] >>(817) 234-6842 >> >>*************************************************************************** >>* TechNet mail list is provided as a service by IPC using SmartList v3.05 * >>*************************************************************************** >>* To unsubscribe from this list at any time, send a message to: * >>* [log in to unmask] with <subject: unsubscribe> and no text. * >>*************************************************************************** >>* If you are having a problem with the IPC TechNet forum please contact * >>* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * >>*************************************************************************** >> >> >> >---------------------------------- >Jeffery L. Hempton Phone: (219) 429-7335 Fax: (219) 429-4688 >Boardshop Manufacturing Engineer Mail Stop: 25-31 >Hughes Defense Communications >1010 Production Road, Fort Wayne, IN 46808-4106 >Email: [log in to unmask] > >"Those who dream by day are cognizant of many things which escape those who >dream only by night" - -Edgar Allen Poe > > > ---------------------------------- Mark W. Spitnale Phone: (219) 429-5992 Fax: (219) 429- Hughes Defense Communications Mail Stop: 25-31 1010 Production Road, Fort Wayne, IN 46808-4106 Email: [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************